Help!!! Hx swap going wrong!!!

Hello all, I have an issue that I know someone ran accross before.. I have a 97 civic HX manual, with a D16Y5. I am trying to swap in a B18B JDM motor but I am having problems with the wiring harness. I just bought a harness from a 99 civic LX, but that isnt pluging onto my P75 OBD2 ECU, only the Original harness is, so What I need to know is, what went wong? Any help will be GREATLY appreciated..


Thanx in advance
VIn :rofl::crying::crying::crying:

Hello all, I have an issue that I know someone ran accross before.. I have a 97 civic HX manual, with a D16Y5. I am trying to swap in a B18B JDM motor but I am having problems with the wiring harness. I just bought a harness from a 99 civic LX, but that isnt pluging onto my P75 OBD2 ECU, only the Original harness is, so What I need to know is, what went wong? Any help will be GREATLY appreciated..


Thanx in advance
VIn :rofl::crying::crying::crying:

You need the harness from the motor you are swapping in.

You need the harness from the motor you are swapping in.
That's incorrect. The '96-'00 Civic came with a 1-piece harness, where the Integras have a 2-piece harness (engine to connectors at shock tower and then those connectors to the ECU/underdash connectors). So an Integra harness wouldn't work.

The ECU (and engine) is likely from a '96-'99 Integra, which means it's OBD2A. Where '96-'98 Civics are OBD2A and the '99-'00 Civics are OBD2B. That 1 year overlap between the 2 different cars is what the difference is.